Add tiled homepage; rename Business→Businesses; link footer copyright

- Home page (home.html) at / shows the sidebar sections as tiles; reachable by
  clicking the 'SimpleX Manager' brand in the sidebar (was redirecting to /users).
- Rename the category to 'Businesses' (route /businesses, tab/nav/_category),
  keeping the per-account bot_type 'business'. Fix profile back-link label.
- Footer: link 'Bournemouth Technology Ltd' -> bournemouthtechnology.co.uk and
  'SimpleX Network' -> simplex.chat.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

manager/templates/home.html

@@ -0,0 +1,69 @@
+{% extends "base.html" %}
+{% block title %}Home — SimpleX Manager{% endblock %}
+
+{% block head %}
+<style>
+  .home-head { margin-bottom: 28px; }
+  .home-head h1 { margin-bottom: 6px; }
+  .home-head p { color: var(--muted); font-size: 14px; }
+
+  .tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
+  .tile {
+    display: flex; flex-direction: column; gap: 8px;
+    background: var(--card); border: 1px solid var(--border); border-radius: 12px;
+    padding: 22px; text-decoration: none; color: var(--text);
+    box-shadow: var(--shadow);
+    transition: border-color 0.15s, transform 0.05s;
+  }
+  .tile:hover { border-color: var(--accent); }
+  .tile:active { transform: translateY(1px); }
+  .tile .t-ico { font-size: 28px; line-height: 1; }
+  .tile .t-title { font-size: 16px; font-weight: 700; }
+  .tile .t-desc { font-size: 13px; color: var(--muted); }
+</style>
+{% endblock %}
+
+{% block content %}
+<div class="home-head">
+  <h1>SimpleX Manager</h1>
+  <p>Manage your SimpleX accounts, business inboxes and bots — pick a section to get started.</p>
+</div>
+
+<div class="tiles">
+  <a class="tile" href="/users">
+    <span class="t-ico">👤</span>
+    <span class="t-title">Users</span>
+    <span class="t-desc">Personal SimpleX accounts — contacts, groups and channels.</span>
+  </a>
+  <a class="tile" href="/businesses">
+    <span class="t-ico">💼</span>
+    <span class="t-title">Businesses</span>
+    <span class="t-desc">Business inboxes — each customer gets their own group chat.</span>
+  </a>
+  <a class="tile" href="/bots">
+    <span class="t-ico">🤖</span>
+    <span class="t-title">Bots</span>
+    <span class="t-desc">Echo, broadcast, support, directory and dead-man's-switch bots.</span>
+  </a>
+  <a class="tile" href="/network">
+    <span class="t-ico">📡</span>
+    <span class="t-title">Network</span>
+    <span class="t-desc">SimpleX servers and connection status.</span>
+  </a>
+  <a class="tile" href="/notifications">
+    <span class="t-ico">🔔</span>
+    <span class="t-title">Notifications</span>
+    <span class="t-desc">Recent messages received across all profiles.</span>
+  </a>
+  <a class="tile" href="/settings">
+    <span class="t-ico">⚙️</span>
+    <span class="t-title">Settings</span>
+    <span class="t-desc">Theme and manager preferences.</span>
+  </a>
+  <a class="tile" href="https://simplex.chat/file/" target="_blank" rel="noopener">
+    <span class="t-ico">📁</span>
+    <span class="t-title">File upload</span>
+    <span class="t-desc">Share files over SimpleX (opens simplex.chat).</span>
+  </a>
+</div>
+{% endblock %}